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Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Aug. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) shares | May 21, 2020 USD ($) | Jan. 01, 2019 USD ($) | Apr. 01, 2016
Number of Reportable Segments |  |  |  | 3 |  |  |  |  |
Number of Gaming Entertainment Properties |  | 28 |  | 28 |  |  |  |  |
Asset Impairment Charges, Total |  |  |  | $ 174,700 | $ 0 | $ 993 |  |  |
Interest Costs Capitalized |  |  |  | 100 | 0 | 0 |  |  |
Debt Securities, Available-for-sale, Amortized Cost, Total |  | $ 19,000 |  | $ 19,000 |  |  |  |  |
Debt Security Interest Rate Stated Percentage |  | 7.50% |  | 7.50% |  |  |  |  |
Debt Securities, Available-for-sale, Total |  | $ 16,700 |  | $ 16,700 | 16,200 |  |  |  |
Debt Securities, Available-for-sale, Current, Total |  | 600 |  | 600 | 600 |  |  |  |
Debt Securities, Available-for-sale, Noncurrent |  | 16,100 |  | 16,100 | 15,600 |  |  |  |
Taxes, Other |  |  |  | 388,000 | 546,700 | 367,500 |  |  |
Advertising Expense |  |  |  | $ 20,200 | $ 44,700 | $ 33,700 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) | shares |  |  |  | 0 | 0 | 0 |  |  |
Nonrecurring Gain Related to Property Closures |  |  |  | $ 40,000 |  |  |  |  |
Operating Lease, Right-of-Use Asset |  | $ 928,814 |  | $ 928,814 | $ 936,170 |  |  |  |
Accounting Standards Update 2016-02 [Member] |  |  |  |  |  |  |  |  |
Operating Lease, Right-of-Use Asset |  |  |  |  |  |  |  | $ 935,100 |
Operating Lease, Liability, Total |  |  |  |  |  |  |  | 921,800 |
Accrued Rent, Current |  |  |  |  |  |  |  | $ 13,300 |
Borgata [Member] |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  |  |  |  |  |  |  |  | 50.00%
Senior Notes [Member] | Senior Note 8.625% Due 2025 [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 600,000 |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 8.625% |  | 8.625% |  |  | 8.625% |  |
Line of Credit [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Increase in Available Borrowing Capacity | $ 88,200 |  |  |  |  |  |  |  |
COVID 19 [Member] |  |  |  |  |  |  |  |  |
Number of Gaming Entertainment Properties, Open and Operating |  | 24 |  | 24 |  |  |  |  |
Asset Impairment Charges, Total |  | $ 3,600 | $ 171,100 |  |  |  |  |  |

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